Therefore it will be urgent to research a kind of method with practice, rapidness and convenience to test subgrade resilient modulus and to control construction quality of subgrade reasonably.
因此，急需寻找一种便于工程设计应用的、快速、方便实用的回弹模量试验检测方法，并合理地进行路基施工质量控制。
The result shows it is feasible to measure and evaluate subgrade resilience modulus with PFWD.
结果表明，PFWD可用于路基回弹模量的快速检测和评价。
At the same time, there is not uniform between subgrade design index (subgrade resilient modulus) and construction control index (compaction degree).
同时，存在路基设计指标(回弹模量)与施工控制指标(压实度)不统一的问题。
There are many factors to influence subgrade resilient modulus, and the main 3 factors are soil type, compaction degree and moisture content.
影响路基回弹模量的因素有多种，主要包括土质类型、压实度和含水量三个方面。
Experimental results showed that the resilient modulus of unsaturated cohesive subgrade soils reduced with the increase of deviator stress and the decrease of matric suction.
研究结果显示重复荷载下之偏应力愈大则回弹模量愈小，且回弹模量随基质吸力的增加而增加。
The relationship between the modulus of subgrade and frequency spetra is explained.
阐明了土的侧向基床系数与桩的弯曲自振频率之间的关系。
According to the field data of Lateral loaded steel piles at home and abroad, an empirical formula for evaluating, modulus of subgrade reaction under static loading in layered soils was proposed.
根据国内外横向荷载下钢管桩现场试验资料，本文提出了静载作用下多层地基地基系数k_s的经验公式。
According to the field data of Lateral loaded steel piles at home and abroad, an empirical formula for evaluating, modulus of subgrade reaction under static loading in layered soils was proposed.
根据国内外横向荷载下钢管桩现场试验资料，本文提出了静载作用下多层地基地基系数k_s的经验公式。
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